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Odd noise from rear of car on slowing

Asterix187

Member
Oct 7, 2017
733
682
England
I have recently received my Tesla and seems to have turned into the worlds largest loop taxi service where I pick people up from their house and drop them back 15 minutes later... A few people whilst on the FOC trips have commented that they have heard an odd noise from the rear of the car that sounds a bit like an automatic handbrake turning on.

My thoughts are that as I have standard re-gen braking turned on its something so do with that as it seems to make the noise when slowing down, approaching roundabouts etc.

I have also noticed that the brake lights come on on the centre screen at the same time even though I am not touching the brakes.

I assume this is to show the people behind the car is slowing down a bit quicker than they might expect but just wanted to check nothing was wrong.

Any comments gratefully received.
 

DJP31

Active Member
Aug 30, 2015
1,725
1,141
UK
I’m not familiar with the noise, but the brake lights will come on when the car deems the regen effect to be sufficiently close to when brakes in an “ordinary” car would come on, so that’s totally normal.
 

WannabeOwner

Well-Known Member
Nov 2, 2015
5,758
2,929
Suffolk, UK
I have recently received my Tesla and seems to have turned into the worlds largest loop taxi service

Hahaha ... BTDTGOTS ... The audience size will diminish. If not I recommend charging them an Alcohol tax :)

I am fortunate that only a short distance away I have a decent launch straight which then has a nice double bend, all with good road markings. The Taxi Loop punters are still trying apologising for cursing so much during the launch as I take my hands off the wheel through the double bend, and then they have to start apologising all over again!

I have not had any (rear) passengers mention any noticeable noise from Regen. Longshot: I do have detectable motor whine when driving (possible only at steady speed motorway cruise) with Range Mode = On

Brake lights come on when there is sufficient deceleration - there's some law/rule, I believe, that if a car slows down more than X the brake lights must show. It doesn't happen on initial regen at higher speeds, or light-regen (i.e. if you feather it with your foot).
 

unbelievable

Member
Sep 27, 2017
215
251
London
I have recently received my Tesla and seems to have turned into the worlds largest loop taxi service where I pick people up from their house and drop them back 15 minutes later... A few people whilst on the FOC trips have commented that they have heard an odd noise from the rear of the car that sounds a bit like an automatic handbrake turning on.

My thoughts are that as I have standard re-gen braking turned on its something so do with that as it seems to make the noise when slowing down, approaching roundabouts etc.

I have also noticed that the brake lights come on on the centre screen at the same time even though I am not touching the brakes.

I assume this is to show the people behind the car is slowing down a bit quicker than they might expect but just wanted to check nothing was wrong.

Any comments gratefully received.

If it’s such a faint noise that you have to be sitting in the back to hear it, then I wouldn’t worry too much. Also, from what you describe it’s more of a mechanical part operating sound than a noise indicative of a problem.

Might be worth posting on the MS board if you’re really concerned. You’re likely to get a lot more replies there. :)
 

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